baber/WOPTO huggingface dataset:
Patent GB-859361-A (GB)
Title: Method of increasing the size of the dispersed particles in a synthetic rubber latex
IPC: C08C1/065
Filed: 1959-09-29
Abstract: The size of the dispersed particles in a synthetic rubber latex is increased by adding to the latex 2 to 15% of a volatile electrolyte which is an ammonium or substituted ammonium (amine salt that can be volatilized from aqueous solution at temperatures up to 100 DEG C. and 0,03 to 1% of polyvinyl alcohol or polyethylene polyamine. Specified latices are aqueous emulsion polymerisates of butadiene, isoprene, 2, 3-dimethyl butadiene, propylene or their copolymers with styrene, vinyl toluene, alpha-methyl styrene, chlorostyrene, dichlorostyrene, vinylnaphthalene, acrylic acid, methyl acrylate or methacrylate, acrylonitrile, methacrylonitrile, methacrylamide, 2-vinyl pyridine 2-methyl-5-vinyl pyridine, methyl vinyl ketone and vinylidene chloride.  Specified volatile electrolytes are ammonium chrbonate or bicarbonate, formate or nitrite, dimethyl or diethyl ammonium, ammonium chlorate, dimethyl ammonium formate and morpholine carbonate.  Specified polyamines are diethylene triamine, triethylene tetramine, tetra-ethylinepentamine, pentalkylene hexamine, hexa-ethylene heptamine, heptaethylene octamine and higher polyamines.  The volatile electrolyte may then be distilled from the latex and water also evaporated therefrom until the latex is concentrated to a solids content of 55 to 70%.  U.S.A. Specification 2,475,053 is referred to.
Patent GB-604863-A (GB)
Title: Apparatus for measuring moisture content of materials
IPC: G01N5/04
Filed: 1945-12-06
Abstract: 604,863. Measuring the moisture-content of substances. BROCK, R. B. Dec. 6, 1945, No. 33063. [Class 97 (iii)] [Also in Group XVIII] A chemical balance is adapted for measuring moisture content by locating the commodity pan 23 in a compartment 16 of a casing 12, and subjecting it to radiation from an . infra-red lamp 29 backed by a reflector 30, so that material can be dried-out whilst on the pan, and the drop in weight used to measure its moisture content. In the apparatus shown, the balance itself is located in a lower compartment, and the pan 23 is supported on a carriage 21 at one end of the balance beam 18 by rods 22 passing upwardly through a partition 14 separating the compartments. The pan is of polished anodized aluminium, and the compartment 16 lined with polished foil and provided with ventilation openings. A pointer 24 on the beam 18 indicates on a scale 25 calibrated in moisture content, and is initially brought to zero by adjustment of the counterweight 19 with a weight, equal to that of the sample under examination, in the pan 23. Additional weights are applied to extend the range of the apparatus to other ranges than one from zero.
Patent GB-1198940-A (GB)
Title: Improvements relating to Photographic Apparatus
Inventor: DOWNEY ROGERS BOWKER
IPC: G03B17/52
Filed: 1968-07-11
Abstract: 1,198,940. Magazines for self-processing cameras. INTERNATIONAL POLAROID CORP. July 11, 1968, No. 33134/68. Heading G2A. A film magazine 12 for containing a pack of "Polaroid"-type film units has a fixed compressive member 70 which co-operates with either a movable compressive member 58 mounted on the camera, or another movable compressive member forming part of the magazine. The magazine can be releasably attached to the camera, of which it thus then forms an integral continuous portion, and when so attached the members 70 and 58 act together to form the rupturing and spreading means for the processing liquid. The member 58 is a roller which is spring-loaded against member 70. The latter is moulded integrally with the magazine, of a plastics material. The magazine, which is disposable and intended to be discarded after exhaustion of its complement of film units, is attached to the camera by hooked members 32 at one end thereof, these engaging corresponding recesses in the camera body. Thus when installed in position, as in Fig. 1, the magazine effectively forms a continuous external portion of the camera housing. The other end of the magazine has latching means, detailed in Figs. 5 and 6 (not shown) for holding it securely in position, and is released for removal by pressing a button (102). After exposure, the film unit is pushed towards the pressure members 58, 70 by the angled edge 50a of a member 50, which can be pushed by means of a handle 52 extending externally of the camera. The film unit passes between the pressure members, so rupturing the container of processing liquid, and then passes into a chamber 56, where it remains until the image transfer is completed. It is then removed, and the cover stripped away, leaving a finished slide or transparency ready for viewing or projection. The chamber 56 is hinged to the camera housing, and can be folded back when not in use. The compressive member 70 may be adjustable and removable.
Patent GB-891739-A (GB)
Title: Rotors for turbines, compressors and like fluid-flow machines
Inventor: WHITEHEAD LESLIS THOMAS
IPC: F01D5/02
Filed: 1959-09-30
Abstract: 891,739. Turbine blades. POWER JETS (RESEARCH & DEVELOPMENT) Ltd. Sept. 5, 1960 [Sept. 30, 1959], No. 33169/59. Class 110 (3). [Also in Group XXII] A turbine or compressor rotor is made up of at least two sheet metal laminµ 1, the adjacent faces thereof being in contact with one another over their whole extent and being formed with circumferentially extending interengaging grooves 3. The laminµ 1 taper in thickness towards the rim and the end laminae of the pack also have circumferential grooves. These grooves engage with corresponding grooves in bosses 4 and in annular side plates 8. The whole assembly is held together by rings of bolts 6, 9 and is bolted to a flange 7a on a shaft 7. The plates 8 have axially-extending seatings 10 for the roots of the blades 11. In a modification the side plates extend outwardly of and across the ends of the laminµ and the seatings are formed only in the extensions of the side plates. Alternatively, only the central laminae are in contact over their whole extent and the outer laminµ are spaced outwardly at the hub by spacer rings. The laminµ may be formed by rolling sheet metal discs between conical rolls set with a tapered gap between them and the contacting surfaces are ground except in the region of the grooves 3. Alternatively, the rolls may be formed so that the hub and rim regions of the discs are left thicker to allow for subsequent machining of the grooves.
Patent GB-1360331-A (GB)
Title: Closing-off devices for pipelines
IPC: F16L55/13
Filed: 1972-07-17
Abstract: 1360331 Minimising gas explosions LINDE AG 17 July 1972 [16 July 1971] 33304/72 Heading A5A [Also in Division F2] A device for closing off a pipeline carrying an explsoive gas in the event of an explosion comprises a tubular housing 1 and an axially movable cylinder 2 mounted by an elastic steel wire 7. The open end of the cylinder projects into a recess formed by a coaxial tube 4 and the wall of the housing. In the event of an explosion up stream of the device, the cylinder moves into the recess to seal against the frustoconical surface of the tube 4 which may have circumferential grooves 12. The angle of the frusto-conical surface of the tube 4 and of the inner surface of the cylinder to the axis is at most 10‹ and preferably 5‹. The device further includes a flame trap 6 of steel wool or a sintered body. The cylinder 2 may be of aluminium.
Patent GB-440681-A (GB)
Title: Improvements in flexible coverings for walls, floors, ceilings or the like
IPC: E04F13/08
Filed: 1934-11-20
Abstract: 440,681. Facing-tiles ; plastic compositions ; moulding. DESAGNAT, G., 54, Rue d'Anjou, Paris. Nov. 20, 1934, Nos. 33361 and 33362. Convention dates, Nov. 21, 1933 and Oct. 30, 1934. [Class 87 (i)] [See also Group V] A covering for walls, floors, ceilings, and the like, which comprises a plurality of independent units 13 of plastic material moulded on to a common substratum of metal or textile fabric 14, is formed by casting plastic material in a mould having a number of compartments, pressing the fabric 14 into the plastic material and against the upper edges of the separating walls of the mould, and scraping off any of the plastic material which penetrates through the fabric. The units 13 may be of hexagonal shape in plan, with bevelled edges, as shown in plan in Fig. 1, or they may be square and have bevelled edges. In another form, the units are rectangular in plan, as shown in Fig. 4, and have curved surfaces. A preferred composition for the units comprises 3000 to 4500 parts by weight of calcined magnesia, 100 to 450 parts of titanium oxide, 1000 to 2000 parts of calcium chloride, 50 to 300 parts of talc, 100 to 3000 parts of sand, and 300 to 450 parts of fireclay. The Specification as open to inspection under Sect. 91 describes also a ceiling covering comprising plastic elements 13 and a backing 14, as shown in Fig. 1 (Cancelled). This subject-matter does not appear in the Specification as accepted.
Patent GB-650219-A (GB)
Title: Electrical process for melting glass
IPC: C03B5/033
Filed: 1948-12-29
Abstract: 650,219. Glass smelting by electric heating. GALLOIS, R. Dec. 29,1948, No. 33430. Convention date, Jan. 13. [Class 39(iii)] A process for melting a glass batch in three consecutive stages consists in first heating the batch by electrical resistances to render it electrically conductive, in then heating it by the passage of electric current therethrough until a temperature is reached at which all endothermic reactions are completed, and then melting and refining the glass in a separate tank as by the passage of current therethrough. The temperature attained in the first stage is about 400 to 600‹C. and in the second stage about 1000‹C. The second stage is preferably carried out in a heat-insulated tank having two of its opposite faces constituted by electrodes between which the voltage gradient does not exceed 100 volts A.C. per centimeter. This latter tank may be of vitreous silica and the electrodes of metal or grasilica and the electrodes of metal or graphite.
Patent GB-353349-A (GB)
Title: Improvements in or relating to a process and apparatus for the manufacture of gramophone records
IPC: B29C43/02
Filed: 1930-11-06
Abstract: 353,349. Moulding phonograph records. HILHOUSE, G., 41, Berrylands, Surbiton, Surrey. Nov. 6, 1930, No. 33450. Addition to 345,875, [Group XXXVIII.] [Class 87 (ii).] A moulding press, preferably hydraulic, for forming disc sound records has a centering pin 7 provided with longitudinal grooves, or made hollow and perforated, for the escape of gases generated from the blank. The matrices are surrounded by rungs to limit the closure of the press.
Patent GB-484731-A (GB)
Title: Improvements in and relating to electro-dynamic relays
IPC: H01H53/015
Filed: 1936-12-08
Abstract: 484,731. Electromagnetic relays. BRAUER, E. Dec. 8, 1936, No. 33651. Convention date, Dec. 9, 1935. [Class 38 (v)] An electric relay has a coil 2 movable in the axial direction in an annular air gap of a permanent magnet 1, which coil is mounted on an oscillating member which is carried on blade springs and is counterbalanced to give insensitivity to shocks. The moving coil 2 is carried by a downwardly-extending tubular extension of a non-magnetic carrying member 4 which is pivotally carried by blade springs 13 and carries a counterweight 8. The member 4 carries contacts 12 and 12a mounted on blade springs 38 and adapted to co-operate with relatively fixed adjustable contact screws 14 and 14a. An adjustable blade spring 16 returns the member 4 after operation. The whole or a portion of the moving coil may be short-circuited after operation to prevent chattering. A cone 47 protects the contacts and a cardboard tube 36 keeps dust &c. from the moving coil. In a modification of the invention the movable spring-mounted contacts may be damped by rubber buffers and the movement of member 4 may be assisted by a second electromagnet, and damped by the dashpot action of the magnetic core in a cylinder formed by the coil carrier.
Patent GB-1141639-A (GB)
Title: Prevention of encrustation on the internal surfaces of crystallizers of the evaporator type
IPC: C13B30/02
Filed: 1967-07-21
Abstract: 1,141,639. Evaporators; crystallization of sugar. SOC. FIVES LILLE-CAIL. 21 July, 1967 [28 July, 1966], No. 33697/67. Addition to 1140948. Heading B1B. During the concentration and crystallization of solutions, e.g. of sugar, flowing through an evaporator divided by apertured-partitions into a series of cells, unsaturated solution is sprinkled into each cell so that the unsaturated solution flows in film-form over successive partial areas of the internal upper surfaces of the cell, whereby the formation of crystals on the internal surfaces is inhibited, but the growth of crystals in the solution flowing through the cell is maintained. In the plan of a single cell shown, the unsaturated solution is supplied through conduit 22 to rotary valve 26 from which it flows successively through conduits T 1 , T2 . . . T 6  to jet pipes A 1 , A 2  . . . A 6  arranged end-to-end at the upper parts of the lateral walls 28 and partitions 12.
Patent GB-837146-A (GB)
Title: Improvements in or relating to the moulding of plastic articles
IPC: B65D1/26
Filed: 1957-10-29
Abstract: 837,146. Moulding plastic cups &c. CROWN MACHINE & TOOL CO. Oct. 29, 1957 [Oct. 30, 1956; Oct. 1, 1957], No. 33736/57. Class 87(2). [Also in Group XVII] A cup is moulded from foamed synthetic resin, e.g. polystyrene, having inner and outer skins, by moving a chamber 162 to the left to allow pre-foamed beads of polystyrene in a hopper 156 to fall into the chamber, and then moving the chamber to the right to allow the beads to fall into a mould cavity 104 between a core 106 and a mould member 36. Suction is applied to the mould cavity to facilitate the filling of the mould cavity, by first supplying compressed air to pistons 78 to separate the core from the mould member, and then applying vacuum through  a  shaft 96 and,channels 144. When the mould cavity is filled, the supply of compressed air to the pistons 78 is stopped, and the pistons allowed to rise to close the gap between the mould and the core. The chamber 162 is then moved to the left again to bring a heating element 178 over the top of the mould and at the same time, hot air or steam is fed to the chamber 48 around the mould cavity and the cavity x in the core. When the beads have been fully expanded, cold water or air is fed into the chamber 48 and to the inside of the core. The core is then lowered by the piston 84 and during its descent, pinions 132 engage racks 134 causing the shaft 96 to rotate and bring the core to an inclined or horizontal position to enable the moulded cup to be removed from the core. Compressed air may be supplied through a pipe 120 to facilitate the removal of the cups. An alternative construction for supplying compressed air is described with reference to Fig. 8 (not shown). When the core is raised again, the racks, and pinions rotate it back to a vertical position, and it is guided accurately by a cam follower 130 which engages a cam slot 128. In a modification, Fig. 7 (not shown), the top of the core may be made of irregular or undulated shape to prevent the beads from bunching together on that side of the cavity nearest the hopper. In a further modification, see Fig. 6 (not shown), the mould cavity may be heated by dielectric heating elements. In which case the beads may be sprayed with water or drawn through a moist atmosphere or incorporated with powdered aluminium.
Patent GB-323542-A (GB)
Title: Improvements in vehicle and other brakes and clutches
IPC: F16D65/22
Filed: 1928-09-01
Abstract: 323,542. Silvester, H. Sept. 1, 1928. Band; blocks and shoes acting on drums.-An internal expanding brake or clutch comprises according to one construction a flexible band 3 carrying an extension piece 12 at one end and a screwed rod 16 at the other to which is pivoted at 10, 11 a lever or crank 9. An operating lever 8 is rigid with the crank pin 11 which extends through an elongated hole in the back plate to permit limited circumferential floating movement of the operating mechanism and the band. A stop 6 fixed to the back plate is disposed between the ends of the band and may be formed with a guide part 7. Adjustable eccentric stops 5 are provided for positioning the band and as a further means of adjustment the rod 16 screws into a nut 13 rotatable in the end part 14 of the band by the engagement of a. suitable tool with holes in the head 15 of the nut. The part 14 may be split and provided with a screw so as to clamp the nut after adjustment. In a modification the band comprises four sections hinged together with release springs extending between the sections. In this construction the end of the shaft 8<1> of the crank 9 has a ball end 22 mounted in a bearing and the shaft has an operating arm 8 the end 21 of which is' disposed under the centre line of the ball bearing. According to the Provisional Specification the band may be operated by a lever having a T-head, the, opposite ends of the head being pivoted to the ends of the shoe, or the band may be pressed on to the drum by radially moving rollers; also the band may have more than one turn, a stop being arranged adjacent each end.
Patent GB-1113955-A (GB)
Title: Improvements relating to uhf tuning arrangements
IPC: H01P7/04
Filed: 1965-08-09
Abstract: 1,113,955. Radio receiver tuning arrangements. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. 9 Aug., 1965 [12 Aug., 1964], No. 33955/65. Heading H3Q. [Also in Division H1] A U.H.F. tunable resonant circuit comprises a coupling conductor 9 the effect of which at the low frequency end of the range is increased by providing a high-resistance portion in one of the walls of the resonant cavity. At the higher frequency end of the range, a current loop tends to be established in the inner conductor 5, trimmer capacitor 11 and the base of the cavity. At the low frequency end, more current flows through tuning capacitor 7, spindle 8 and side walls 2, 3. A resistance in wall 3, e.g. a gap 13, tends to divert current to wall 2 and hence to increase the degree of coupling to conductor 9. The effect may be increased by placing the inner conductor 5 closer to the wall 3. The gap 13 may be traversed by a loop 14 coupling the cavity to a further cavity 3, 4, 6. Instead of a gap, local thinning of the wall may be used or resistive, semi-conductive or dielectric material may be inserted in the wall. The invention may be applied to #/2 cavities.
Patent GB-204975-A (GB)
Title: Improvements in double plunger valves
IPC: F16K1/12
Filed: 1922-12-13
Abstract: 204,975. Blakeborough, R. A., (Larner- Johnson Valve & Engineering Co.). Dec. 13, 1922. Valves controlled by pilot valves. - A valve device of the type in which a circular casing contracted at its ends encloses a cylinder having a plunger with a tapered nose adapted to engage a seat at the contraction, is adapted to operate under conditions of flow in either direction. In the form shown in the Figure the internal cylinder 3 which has a dividing partition 4 is supported by webs 2 and houses a pair of oppositely directed valve plungers 7, 8 adapted to co-operate with seats 9, 10. Under normal conditions the valves are actuated by fluid pressure from the conduit admitted by leakage past one valve and between the plungers and cylinders and exhausted through one or other of the apertures 15 in the nose of the plungers under the control of auxiliary valves 19. The valves 19 a.re formed on spindles 13<a> provided with racks 14<a> engaging opposite sides of an operating pinion 17 and have shoulders arranged to engage bearings 20 so that the valves may be positively opened when there is no pressure in the pipe line. The dividing partition may be omitted and the valve face may have a cylindrical extension to reduce the flow prior to the seating of the valve. In a modification the two valve plungers are rigidly connected together.
Patent GB-1172683-A (GB)
Title: Improvements in or relating to Apparatus for and a Method of Locating Faults in Electrical Conductors.
IPC: G01R31/08
Filed: 1966-07-28
Abstract: 1,172,683. Locating faults in laid cables. ELECTRICITY COUNCIL, N.H. POOL and A.E. LIVESEY. July 28, 1967 [July 28, 1966], No.34013/66. Heading G1U. A break in an underfloor heating element is located by feeding an r.f. signal of at least mc/s in frequency into one end of the conductor to set up a standing wave pattern therein between the line end of the conductor and the break and traversing a capacitive pick-up along the path of the element to locate the break as revealed by a rapid falling off of the picked up signal strength as the break is passed. The r.f. signal may be modulated at an audio frequency or the picked up signal may be mixed with the output of a local oscillator to produce an audio frequency which is fed to headphones. An adjustable impedance matching II network is provided for coupling the r.f. generator to the element. The capacitive pick-up comprises a stub antenna of adjustable length and may be connected via a tuned circuit, or directly if the field strength is high enough, to the detector and indicator. An inductive pickup may be provided to obtain an approximate position of the break which is then located accurately using the capacitive pick-up.
Patent GB-975275-A (GB)
Title: Improvements relating to methods of manufacturing pole-piece units for magnetic heads
IPC: G11B5/193
Filed: 1961-09-22
Abstract: 975,275. Making magnetic heads. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Sept. 22, 1961 [Sept. 27, 1960], No. 34025/61. Heading B3A. [Also in Division G5] A pole-piece unit for a magnetic record/ playback and/or erase head is made by cementing or soldering two or more ferrite blocks together by a known thermal process at a first temperature to produce transducing gaps 15 of a desired length, providing at least one bore 23, defining the inner end of the gap-depth which is then filled with a non-magnetic material by a lower-temperature thermal treatment to strengthen the transducing gap region, and slicing the assembly to produce two units per bore 23. In Fig. 2, an assembly of three blocks results either in eight units, which may be assembled into heads such as according to Fig. 3 in known manner, where the link piece 29 is also of ferrite; or alternatively, by omitting appropriate slicings, polepieces for unitary head structures for multiple-track and/or for record/monitor or erase/record purposes may be produced. The bores 23 may be filled with glass cylinders or pulverulent material and this stage is preferably carried out under combined heat and pressure.
Patent GB-452551-A (GB)
Title: Improvements relating to display apparatus
IPC: G09F13/00
Filed: 1935-12-09
Abstract: 452,551. Changing signs. JANZEN, O., 20, Hillmannstrasse, Hermsdorf, Berlin. Dec. 9, 1935, No. 34086. Convention date, Dec. 24, 1934. [Class 3 (i)] Behind a stationary opaque sign facia 2 fitted with lens or prism - shaped translucent indicia 3, such as solid glass rods, is rotated a translucent disc 5 having a surface which is hammered or fluted or is ornamented in the form of ice flowers. Light from stationary or rotating lamps 10 is by this means given a flowing effect in the indicia 3. A colour filter 6 having one or more colours is formed on or attached to the disc 5 to rotate therewith. The discs 5 and 6 are mounted on circumferentially disposed rollers, which may be axially displaceable to adjust the position of the discs, and one, 7, of which is rotated through gearing 9 by a motor 8. The lamps 10, when rotated, may also be actuated by the motor 8, and may turn in the same or in the opposite direction to the discs 5, 6 and at the same or at different speeds. In a further form the discs 5 and 6 may be independently mounted, and may rotate in any relative manner. The sign casing 1 may be suspended, and a plurality of casings may be juxtaposed and their moving parts driven by a common motor. The Specification as open to inspection under Sect. 91 comprises also strip-like display surfaces and the replacement of the disc 5 by individual strips fixed to an endless moving band. This subject-matter does not appear in the Specification as accepted.